Visiting Seoul for the first time! Any must-try beauty and skincare experiences?

Hi everyone! I'm Chiawei, from Taiwan. I'm heading to Seoul for a business trip next month, and I'll finally have the chance to experience Korean beauty culture firsthand! I've always loved using Korean skincare products, but I've never actually had a treatment or consultation there.

I'm mainly looking for recommendations beyond just browsing skincare shops in Itaewon or Myeongdong. Are there any skin treatments or beauty consultations that are worth experiencing in person? My skin is on the drier side, and lately, I've been concerned about fine lines and dullness. I've heard Seoul has many different treatment options, but honestly, I'm not sure which ones would be suitable for me or what the approximate budget would be.

Has anyone here undergone similar treatments there? I'd love to hear about your real experiences! I'm also open to recommendations for good areas or neighborhoods for skincare shopping. Thanks, everyone!